From what I have seen, that model is only one that does not move back. Buddy picked up a used one and it was that exact model. Look for a super touring or if you search on Revzilla, will give you specs on each seat. See below for differences between 2 seats.
Mustang One-Piece Sport Touring Seat For Harley Touring
Clean and sporting, but still luxurious and fit for the long-haul machine it sits on. This low and sleek saddle is built for all-day cushion on those longer trips resulting in a sporting style coupled up with touring comfort.
Offers the rider and passenger the comfort of a touring seat with a sporty, stylish look
Seat nose is narrower than stock so that the rider can plant his feet on the ground
Seat will accept a Mustang or HD driver backrest kit
Front seat width - 15.5"
Rear seat width - 11"
Mustang Super Touring Seat For Harley Touring
If you like to get to the hotel and get to bed, a stock seat is no problem. If you have plans to experience the night life at your destination, however, you might want to consider a seat that will leave you the energy to do so! Get there sore or get there happy and ready to keep going.
One-piece, super-comfortable touring design provides the rider with the fullest, most comfortable seat possible
Sits the driver 1 3/4" further back than the stock seat
Thick, comfortable foam sits rider higher than stock seat
Driver width - 19"
Passenger width - 14"
Vintage seats have smooth covers; Regal seats feature tufted buttons
2017 Vivid Black Road Glide Special. RC Components Excalibur slip-ons. Stage 1,4 point docking station, passenger sissybar/backrest. 14" Freedom Shield (Medium Gray), Custom Dynamics signals ( turn and brake), Oberon Clutch lever, Factory 47 14s.